Improvement in grate-bars



- UNIT -D STATES-PAT NT OFFICE FREDERICK VAN PATTEN AND GEORGE w. PERRY,OE AUBURN, NEW YORK.

IMPROVEMENT IN GRATE-BARS.

Specification forming part of Letters Patent No. 222,165, dated December2, 1879; application filed July 17, 1879.

To all whom it may concern Be it known that we, FREDERIOK VAN PAT- TENand GEORGE W. PERRY, of the city. of

Auburn, county of Cayuga, and State of New York, have invented certainnew and useful Improvements in Grate-Bars; and we do hereby declare thefollowing to be a full, clear, and exact description of the same,reference being had to the accompanying drawings, forming a part of thisspecification, in which-- Figure 1 is a side elevation of our grate-bar,showing its position in the furnace when in use. Fig. 2 is a plan viewof the same, one of the fuel-supports being removed to show theretaining-lugs on the side of the bearing-bar. Fig. 3 is a sideelevation of one end of the bearing-bar, with one of the intermediatefuelsupports, in dotted lines, inposition. Fig. 4 is a side elevation,partly in section, of one of the end fuel-supports. Fig. 5 is an endview of the same. Fig.6 is-a view of one end of the bearing-bar. Fig. 7isan end view of one of the intermediatefuelsupports. Fig. 8 is asection of the bearing-bar on line 00 m, Fig. 3.

The object of our invention is to produce a grate-bar composed,essentially, of a bearingbar and removable fuel-bearings less liable tobe destroyed by heat or use than those employed prior to our invention 5and it consists in such grate-bar and the peculiar construction andcombination of the parts composing it, as will be hereinafter fullydescribed and claimed.

In the drawings, 1 is a bearing-bar, provided with a series of lugs, 2,two on each side of said bar, for each intermediate fuel-bearing,

for a purpose to be explained, said bar being preferably made ofcast-iron. This bar 1 is provided with hook-shaped ends 3, for a purposeto be explained.

4 are end removable fuel-supports, and 5 intermediate removablefuel-supports, preferably made of cast-iron. Each of the endfuelsupports 4 is provided wi th standards 6 and 7,

forming intimate parts with the same. Each standard 6 has a perforation,8, the upper and lower walls of which are inclined to receive and retainthe hook-shaped ends 3 of the bearin g-bar 1. Each standard 7 is slottedto straddle and rest upon the bearing-bar 1.

, in gs.

The fuel-supports 4 and 5 are slotted, as

shown in the drawings, and an opening is made beneath them in eachstandard to allow a free circulation of air, and thus prevent theirrapid destruction by heat and the conveyance gf much heat by conductionto the bearing- The hook-shaped ends 3 of the bearingbar 1 are insertedin the perforations S of the end fuel-bearin gs 4, and the standards 7of the latter straddle and rest upon said bar in use,

the outer ends of said fuel-bearin gs 4 resting upon suitable ledgesbuilt in the walls of the furnace, as shown in Figs. 1 and 2 of thedraw- The intermediate fuel-bearings 5 have their slotted standards 7straddling and restin g upon the bearing-bar l and over their respective lugs 2 on said bar. The bearing-bar 1 is thus hung so low downin the furnace that it is not liable to become warped or burned by theheat. The slotted fuel-bearings and standards provided with openingsallow a free circulation of air, heat up the heat-currents, and thusprevent their rapid destruction and the transmission of heat to thebearing-bar.

The fuel-supports can expand and contract without any strain uponthemselves and the bearing-bar, and the latter is also free to ex pandand contract without danger of warping or twisting.

When one of thefuel-bearings becomes worn out or burned, it can bereadily removed and a new one substituted at small expense.

Having thus described our invention, what we claim as new, and desire tosecure by Let ters Patent, is-- 1. The combination, in a grate-bar, of abear ing-bar and end fuelsupports, which also support said bar,arranged, substantiallyas shown,

below them, substantially as described.

2. Fuel-bearings slotted and provided with standards having openings,substantially as described.

3. End fuel bearings provided with standards, one of which is slotted tostraddle and rest upon the bearing-bar 1, and the other with aperforation to receive the hook-shaped end of said bar, substantially asdescribed.

4. Intermediate fuel-bearings slotted substantially as shown, andprovided with standards having openings, substantially as shown, andslotted to straddle and rest upon the bearing-bar 1, substantially asdescribed.

5. The combination, with the bearin g-barprovided with lugs 2, ofintermediate fuel-supports having standards slotted substantially asshown, to straddle and rest upon said bar over their respective sets oflugs, substantially as described.

6. A grate-bar composed, essentially, of end and intermediatefuel-supports, and a bearingbar supported by said end fuel-supports,substantially as described.

In testimony whereof We have signed our names to this specificationinthe presence of two subscribing witnesses.

FREDERICK VAN PATTEN. GEORGE W. PERRY. Witnesses:

HORACE T. 000K, JNo. H. CARR.

